Gage-cock.



A. H. JETTINGER.

GAGE COCK.

APPLIOA'MON FILED MAY 16, 190e.

9 l 6, l 63 Patented Mar. 23, 1909.

fiom/EVS 'low stem 9 which is integral or otherwise ABBER'I? H. JETTINGER, OF DELPHOS, OHIO.

GAGE-COCK.

Specification of Letters Patent.

Patented March 23, 1909.

u Application led May 16, 1908. Serial No. 433,163.

. To all whom it may concern.'

p Beit known that' l, ./.XLBERT H. JETTINGER, a citizen of the United States, and a resident "of D'elphos, in the county of Allen and State `Lof Ohio, have invented a new and lmproved Gage-Cock, of which the following is a full,

" clear, and exact description.

This invention is an improvement in gage cocks such as are used on steam boilers for determining the height of water. The passage in these'cocks frequently becomes obstructed, or the valve fails to seat, in which case with cocks of the ordinary 'construction v it isnecessary to cool' the boiler down before the obstruction can be removed or the valve .ground or otherwise repaired.

. My invention belongs to that class in which any corrosion or other lorelgn matter may be removed from the cock `or repair made to To `this end I preferably construct the cock of two plugs or shells, each havinfY a valve seat, and one of them provided with a hollow stemcarrying a valve adapted to seat on `425 the seat of the other ave cock' and Fi 2 is a side view of the same.

The cock embodies in its construction, two

' plugs or shellsl an inner plug 5 and an outer plug 6, each plug havingan intermediate chamber 7 and a valve seat 8. The plug 5 is exteriorly threaded at each end and has anA porintermediate 'angular wrench-engaging tion, as clearly shown in Fig. 2. z'lhat end of the plug 5 adjacent to thc valve seat 8 is made of suchsize as to be screwed into the gage cock opening of the boiler. 'The opposite end ofthe plug receives in its bore a holrigid with the inner end of the plug 6. .The bore or port in this stem leadsfrom the valve seat 8 'and terminates in two branches connecting at opposite sides with the chamber 7 pf the plug The extremity of the stom `the valve while the pressure is on the boiler.

is made in the form ol af valve 10 adapted to seat on the seat 8 of the plug 5 and cut oil coinrmxnication between 1ts chamber 7 and the boiler. The stem 9 at the outside of the casing 5 hasy a thread 11 preferably of coarse square form, which screws into a packing nut 12, which in turn is threaded on the outer end of the plug 5.

The plug 6 has a threaded opening 13, in the side thereof, leading from the chamber 7,. for receiving the usual nipple or nozzle, and is provided with a valve v14 adapted to seat on its :seat S and control the communication between the tubular or hollow stem 9 and the opening 13. The stein 15 ofthe valve 14 extends through the outer end of the plug G, where it has an operating handle 16, and is threaded at the inside thereof for screwing through. a packing nut 17, the latter being screwed on the outer threaded end of the plug 6. The plug 6, like the plug 5, has an angular wrench-engaging portion intermediate its threaded ends by which it is operated in closing and opening the valve 10. Shouldthe bore or port in the stem 9 become obstructed by corrosion or otherwise, or the valve 14 fail to seat, it is unnccessar to wait until the pressure is removed from t 1e boiler, but repair may bemade with a full or moderate oiler pressure. This is done by rcmoving the packing nut 17 and withdrawing the valve stem 15 after the plug 6 has been turned to close the valve 10. By running a wire or other like device through the bore of the stem 9 the obstruction may be punched out, the wire being deflected either through 011e or the other of the branches ol the port in passing in the chamber 7 of the plug 5. l/Vhile the valve 1G remains closed, the valve 14. and its' seat may be ground if desired. When the lug 6 is turned to again open the valve 10, tie obstruction loosened will be blown out by the boiler pressure.

Having thus described my invention, I claim as new and desire to secure by Letters Patent:

1. ln a gage cock, the coml'iinatio'n of two plugs each having a valvc'seat and oneof said plugs having a tubular stem provided with a valveadapted to seat on the seat of the other plug, and a stein 'fitting into the outer end of the plug having the tubular stem and vprovided with a .valve adapted to seat on the seat of the last mentioned plug.

2. ln a gage cock, the combination of two plugs each having an intermediate chamber and one of said plugs having a tubular stem passing into the end of the other plug provided with a valve for controlling the cornmunication between its opposite end and lts chamber, and a stein passing into the plug having a valve for controlling -communication between the chambers.

3. ln a gage cock, the combination of tWo hollow plugs each having a valve for controlling the passage of a fluid therethrough, and with one of said valves rigid with one of said plugs.

'4., In a gage cook, the combination of two hollow plugs, valves for controlling the passage of a fluid through said plugs, with one vof4 said valves rigid with one of the plugs, and a packing nutearried by each of the plugs throughwhichits respectivevalveisthreaded.

5. In a gage cock, the combination of an inner plug and an outer plug each having threaded ends with intermediate 'angular Wrench-engaging portions, a tubular'stem rigid with the outer plug having a valve for controlling the passageA of a fluid through the inner plug,va plaelringl nut threaded on the outer end of t ed on the outer end of the outer plug, and a stem threaded through the last mentioned packing nut having a valve for controlling the passage of a fluid from the inner plug to the outer plug through said stem.

' 6. I'n a gage cock, the combination of a plug, a second lug having a tubular stein, the bore of Whic' i terminates in two 'branches near its extremity and provided with avvalve for controllingthe flow through the first mentipned plug.

sIn testimony whereof'l have signed my.

name to this specification in the presence of' two subseriblng lwltneysses.

ALBERT H. JETTNGER.

Witnesses:

OLIVER M. RossELrr, FRED S. WILeoXEN.-

e inner plug through which v said stern is threaded, a packing nut thread- 

